The free and public event runs from 5:30 to 7 p.m. at the district's office, 1850 S.W. 170th Ave., Beaverton. A short presentation will be given at 5:45 p.m.

Currently, the water district is obtaining drinking water from the Joint Water Commission through the Tualatin and Trask watersheds. The district also uses an aquifer storage and recovery well, plus purchases from the Portland Water Bureau.

Long-term options under consideration include: water from increased storage at Hagg Lake; groundwater wells along the Columbia River near Scappoose; using the mid-Willamette River at Wilsonville and purchasing additional water from the Portland Water Bureau.